Electrical Supplies Unlimited supplies a large stock of  Medium Voltage Circuit Breakers (5-27kV).

Electrical Supplies Unlimited is your trusted source for high-quality medium voltage circuit breakers designed to protect critical electrical systems in commercial, industrial, and utility applications. Medium voltage systems typically operate in the range of 1,000 volts (1kV) up to 35,000 volts (35kV), making these breakers essential for substations, industrial facilities, data centers, and power distribution infrastructure. Our extensive inventory of medium voltage circuit breakers includes proven models from industry-leading manufacturers, ensuring reliable performance, long service life, and compliance with modern electrical standards.

Unlike low-voltage breakers rated at 600 volts and below, medium voltage circuit breakers are engineered to handle higher fault currents and more demanding operating environments. They play a critical role in protecting transformers, switchgear, and distribution equipment by safely interrupting overloads and short circuits before damage occurs. At Electrical Supplies Unlimited, we specialize in supplying dependable medium voltage circuit breakers that balance performance, durability, and cost-effectiveness—helping contractors, engineers, and facility managers maintain safe, efficient, and resilient power systems.

Electrical Supplies Unlimited is also a go-to source for high-quality medium-voltage circuit breakers (5-27kV), offering reliable solutions for industrial, commercial, and utility applications. Our extensive selection of medium-voltage circuit breakers ensures optimal performance, safety, and durability for power distribution systems. Whether you're upgrading an existing system or installing a new one, our expert team is here to guide you toward the best solutions for your electrical needs. With a commitment to superior quality and customer satisfaction, Electrical Supplies Unlimited is the trusted supplier for businesses looking for top-tier circuit breakers in the industry.

One key distinction between medium-voltage and low-voltage circuit breakers is their capacity and application. While low-voltage circuit breakers (typically rated below 1,000V) are designed for residential and commercial electrical panels, medium-voltage circuit breakers (ranging from 5-27kV) are essential for large-scale power distribution, industrial plants, and substations. Medium-voltage breakers are built to handle higher fault currents and provide enhanced arc flash protection, ensuring greater reliability in high-power environments. At Electrical Supplies Unlimited, we provide top-of-the-line medium-voltage circuit breakers tailored to your specific power needs, ensuring efficiency, safety, and long-term durability.

GE
Westinghouse-Cutler-Hammer
Siemens-Allis Chalmers
ABB-BBC-ITE-Gould
Federal Pacific
Square D

We will buy new and used Low & Medium Voltage Breakers

ESU Electrical Supplies Unlimited not only sells top-quality electrical components, but also buys both new and used equipment, including low and medium voltage circuit breakers. Whether you’re upgrading your system or decommissioning old gear, ESU offers a convenient solution by purchasing your surplus breakers and electrical parts. This helps reduce waste and puts valuable equipment back into circulation for future use.

Circuit Breakers in Sunnyside, San Diego. ESU buys and sells new & used Breakers and Panels!

Electrical Supplies Unlimited buys and sells new & used Circuit Breakers in Sunnyside  San Diego surrounding areas including Chula Vista, Imperial Beach, Bonita, Rancho Del Rey, Terra Nova, Eastlake Greens and many more. Of course, we can arrange shipment on a wide variety of products to service those outside our area. We will also buy your used Transformers.

ESU Inc. has proudly served the electrical supply industry for over 40 years. We offer an extensive selection of new, surplus, and recycled electrical supplies to meet both residential and commercial needs. As a fully stocked electrical distributor and wholesaler, we carry a wide range of product lines and specialize in sourcing hard-to-find items. Our knowledgeable team is dedicated to exceeding customer expectations, and our long-standing reputation speaks for itself. Call us at 858.558.2850 to experience our service firsthand.

Our inventory features products from many leading manufacturers, including General Electric, Hammond Power, ITE Siemens, Cutler Hammer, Square D, FPE Federal Pacific, Pushmatic, Zinsco, Crouse-Hinds, Challenger, Westinghouse, Sylvania, and Bryant.

We stock a broad selection of electrical equipment, including circuit breakers, transformers, disconnects, panelboards up to 600V, fuses up to 3000 amps, bolt switch pullouts, motor starters and relays, meter sockets, lighting ballasts, and metal halide and SOX bulbs. ESU also carries Lithonia commercial and residential lighting fixtures.

ESU supplies a diverse range of electrical products to fit virtually any application or budget, serving customers throughout San Diego County as well as intra- and interstate clients. In addition, we rent Greenlee wire pullers, conduit benders, and other professional electrician tools. For personalized assistance, speak directly with one of our specialists—Scott, Kevin, or Chris. Call 858.558.2850 today and let ESU serve your electrical supply needs.

Circuit Breakers Electrical Supplies Unlimited sells and buys both new and used Circuit Breakers, serving Circuit Breakers to Sunnyside, San Diego and nearby areas such as Chula Vista, Bonita, Rancho Del Rey, Terra Nova and more. We can also arrange shipment of many products to serve customers outside the region. In addition, we will purchase your used Transformers, Breakers, Panels and most Electrical Supplies.

We handle most of the major brands, including Westinghouse, Acme, Cutler Hammer, ITE Siemens, Federal Pacific (FPE), Square D, General Electric, and Zinsco. As a fully stocked Electrical Distributor and Wholesaler, we keep many different product lines readily available.

Electrical Supplies Unlimited is San Diego’s go-to source for Circuit Breaker electrical supplies. Our inventory includes a wide range of circuit breakers across most voltages and amperages. In our San Diego store, we carry products from many manufacturers such as Zinsco, Federal Pacific (FPE), Pushmatic, Bulldog, Cutler Hammer, ITE Siemens, Square D, and more. We stock most amperages and voltages. Some examples of what we offer:

20 Amp thru 125 amp Zinsco breakers
20 amp through 1200 amp 480 volt Siemens breakers 3 phase and single phase
15 thru 100 amp 120/240 Volt Pushmatic Breakers
15 thru 1200 amp 120/240 and 480V Federal Pacific FPE circuit breakers

We are circuit breakers and electrical hardware experts. Do not hesitate to call us at 858.558.2850 to find out which Circuit Breaker is right for your requirement.

Your one stop go to guys. Always at your service!

ESU buys and sells new & used Circuit Breakers, Panels, Switches, Plugs and more for Escondido, San Diego

Electrical Supplies Unlimited buys and sells new & used Circuit Breakers in Escondido, North San Diego and surrounding areas including Encinitas, Carlsbad, Oceanside, Cardiff  and many more. Of course, we can arrange shipment on a wide variety of products to service those outside our area. We will also buy your used Transformers.

Welcome to ESU, your go-to destination for circuit breaker solutions in Escondido, San Diego. At ESU, we're dedicated to simplifying the process of buying new, used, and surplus circuit breakers, catering to a wide range of needs for both residential and commercial applications. If you find yourself with excess circuit breakers due to upgrades or changes in your electrical system, ESU offers a convenient and environmentally-conscious solution. Our team of experts meticulously evaluates each circuit breaker to ensure its quality and performance, offering a competitive price for your surplus inventory. With a commitment to sustainability and efficient electrical solutions, ESU not only helps you maximize the value of your unused circuit breakers but also contributes to responsible resource management. Reach out to ESU today and let us help you turn your surplus circuit breakers into a valuable asset.

Electrical Supplies Unlimited (ESU) is your trusted partner for all your electrical supply needs in the Escondido area of San Diego. We stand as a premier buyer of a wide range of electrical components, including transformers, breakers, fuses, and more – both new and used. Our commitment to excellence extends to every aspect of our business, ensuring that we provide the highest quality products to our customers. Whether you're looking to sell surplus electrical equipment or searching for specific components, ESU is here to streamline the process, offering competitive pricing and a seamless experience. With a reputation built on reliability and a dedication to customer satisfaction, ESU is the go-to source for all your electrical supply requirements in San Marcos and beyond. Contact us today to explore how we can assist you with your electrical supply needs

ESU Inc has been in the electrical supply business for over 40 years. We have a large inventory of new, surplus and recycled electrical supplies both for the commercial and residential markets. We are a fully stocked Electrical Distributor and Electrical Wholesaler with many different lines in stock. We specialize in  hard to find items. Our staff is very knowledgeable and our mission is to ensure that our customers expectations are exceeded. Ask around, our reputation is what makes us! Or just call to find out yourself at 858.558.2850.

We stock most major brands including General Electric, Hammond Power, ITE Siemens, Cutler Hammer, Square D, FPE Federal Pacific, Pushmatic, Zinsco, Crouse Hinds, Challenger, Westinghouse, Sylvania, and Bryant.

Our inventory consists of a large selection of Circuit Breakers, Transformers, Disconnects, Panelboards to 600v, Fuses up to 3000 Amps, Bolt Switch Pullouts, Motor Starters and Relays, Meter sockets, Lighting ballasts, Metal Halide and Sox bulbs. We also carry Lithonia Commercial and residential lighting fixtures as well.

Our Products ESU sells a large and diverse inventory of Electrical Supplies, Electrical Equipment, including Circuit Breakers, Fuses, Transformers, Panelboard switches, Safety switches, Fuseable switches, Meter Sockets, Motor Controllers, Lighting  Ballasts, Bolt switch and much more. We carrier almost all manufacturers including Zinsco, Pushmatic, FPE Federal Pacific, ITE Siemens,  Cutler Hammer, Lutron, Lithonia,, Square D, Challenger and many more. We serve the San Diego and SD County areas and to many other intra and interstate clients. We sell products to fit any requirement or budget. ESU rents Greenlee Wire Pullers, Conduit benders as well as other electrician tools. Talk directly to one of our specialists, Ed, Scott, Kevin or Chris to find out more. So give us a call today at 858.558.2850 and let us serve you

Circuit Breakers Electrical Supplies Unlimited buys and sells new and used Circuit Breakers and more for Escondido, San Diego County and surrounding areas including Encinitas, Oceanside, Carlsbad, Vista and more. Of course, we can arrange shipment on a wide variety of products to service those outside our area. We will also purchase your used Transformers.

We purchase most major brands including Acme, Westinghouse, Cutler Hammer, ITE Siemens, FPE  Federal Pacific, Square D, General Electric and Zinsco products. We are a fully stocked Electrical Distributor and Electrical Wholesaler with many different lines in stock.

Circuit Breakers Electrical Supplies Unlimited is your go-to source for Circuit Breaker electrical supplies in San Diego and surrounding areas. We have a large inventory of most brands of circuit breakers including most amperages and voltages. We carry a large variety of manufacturers, including Zinsco, Federal Pacific FPE, Pushmatic, Bulldog, Cutler, Hammer, ITE Siemens, Square D etc. in our San Diego store. We carry most amperages and voltages. Some examples of what we carry:

20 Amp thru 125 amp Zinsco breakers
20 amp through 1200 amp 480 volt Siemens breakers 3 phase and single phase
15 thru 100 amp 120/240 Volt Pushmatic Breakers
15 thru 1200 amp 120/240 and 480V Federal Pacific FPE circuit breakers

We are circuit breakers and electrical hardware experts. Do not hesitate to call us at 858.558.2850 to find out which Circuit Breaker is right for your requirement.

Your one stop go to guys. Always at your service!

Circuit Breakers in Otay, San Diego! ESU buys and sells new & used Breakers and Panels!

Electrical Supplies Unlimited buys and sells new & used Circuit Breakers Otay  San Diego surrounding areas including University Heights, Hillcrest, Golden Hill, Bankers Hill, Linda Vista and many more. Of course, we can arrange shipment on a wide variety of products to service those outside our area. We will also buy your used Transformers.

ESU Inc has proudly served the electrical supply industry for more than 40 years. We carry a wide selection of new, surplus, and recycled electrical supplies for both residential and commercial needs. As a fully stocked Electrical Distributor and Wholesaler, we maintain many different product lines on hand. We specialize in locating hard-to-find items, and our experienced staff is committed to going above and beyond customer expectations. Our reputation speaks for itself—just ask around, or give us a call at 858.558.2850 to experience it firsthand.

Our inventory includes most leading brands such as General Electric, Hammond Power, ITE Siemens, Cutler Hammer, Square D, FPE Federal Pacific, Pushmatic, Zinsco, Crouse Hinds, Challenger, Westinghouse, Sylvania, and Bryant.

Our inventory consists of a large selection of Circuit Breakers, Transformers, Disconnects, Panelboards to 600v, Fuses up to 3000 Amps, Bolt Switch Pullouts, Motor Starters and Relays, Meter sockets, Lighting ballasts, Metal Halide and Sox bulbs. We also carry Lithonia Commercial and residential lighting fixtures as well.

Our Products ESU sells a large and diverse inventory of Electrical Supplies, Electrical Equipment, including Circuit Breakers, Fuses, Transformers, Panelboard switches, Safety switches, Fuseable switches, Meter Sockets, Motor Controllers, Lighting  Ballasts, Bolt switch and much more. We carrier almost all manufacturers including Zinsco, Pushmatic, FPE Federal Pacific, ITE Siemens,  Cutler Hammer, Lutron, Lithonia,, Square D, Challenger and many more. We serve the San Diego and SD County areas and to many other intra and interstate clients. We sell products to fit any requirement or budget. ESU rents Greenlee Wire Pullers, Conduit benders as well as other electrician tools. Talk directly to one of our specialists, Ed, Scott, Kevin or Chris to find out more. So give us a call today at 858.558.2850 and let us serve you

Circuit Breakers Electrical Supplies Unlimited sells and buys both new and used Circuit Breakers, serving Otay, San Diego and nearby areas such asUniversity Heights, Hillcrest, Golden Hill, Bankers Hill, Linda Vista, and more. We can also arrange shipment of many products to serve customers outside the region. In addition, we will purchase your used Transformers.

We handle most of the major brands, including Westinghouse, Acme, Cutler Hammer, ITE Siemens, Federal Pacific (FPE), Square D, General Electric, and Zinsco. As a fully stocked Electrical Distributor and Wholesaler, we keep many different product lines readily available.

Electrical Supplies Unlimited is San Diego’s go-to source for Circuit Breaker electrical supplies. Our inventory includes a wide range of circuit breakers across most voltages and amperages. In our San Diego store, we carry products from many manufacturers such as Zinsco, Federal Pacific (FPE), Pushmatic, Bulldog, Cutler Hammer, ITE Siemens, Square D, and more. We stock most amperages and voltages. Some examples of what we offer:

20 Amp thru 125 amp Zinsco breakers
20 amp through 1200 amp 480 volt Siemens breakers 3 phase and single phase
15 thru 100 amp 120/240 Volt Pushmatic Breakers
15 thru 1200 amp 120/240 and 480V Federal Pacific FPE circuit breakers

We are circuit breakers and electrical hardware experts. Do not hesitate to call us at 858.558.2850 to find out which Circuit Breaker is right for your requirement.

Your one stop go to guys. Always at your service!